Ruby regex replace capture group

You can't. gsub replaces the entire match; it does not do anything with the captured groups. It will not make any difference whether the groups are captured or not.
In order to achieve the result, you need to use lookbehind and lookahead.

"5,214".gsub(/(?<=\d),(?=\d)/, '.')

Source: stackoverflow.com

Similar codes

0 vote317 views1 answer
Ruby create object with attributes
Ruby
0 vote332 views1 answer
How works httparty ruby
Ruby
0 vote342 views1 answer
Sequel ruby alias table
Ruby
0 vote306 views1 answer
How to push different branch to heroku
Ruby
0 vote308 views1 answer
Rails pass variable between controller methods
Ruby
0 vote305 views10 answers
Roblox free robux
Ruby
1 vote343 views1 answer
Is there a way of changing the key of a hash
Ruby
4 votes365 views1 answer
Button in rails
Ruby
0 vote321 views1 answer
Deliver_later not sending mail in sidekiq in rails
Ruby
0 vote298 views1 answer
Rails generate migration array default value
Ruby